CVE-2026-74448

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: fix QID bit leak in pqm_create_queue()

When MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during

the first queue creation for a process, pqm_create_queue() returns

early via 'return retval' without going through the err_create_queue

cleanup label.

This means clear_bit(*qid, pqm->queue_slot_bitmap) is never called,

leaving the reserved QID bit permanently set in queue_slot_bitmap.

Over time this leaks QID slots, potentially exhausting all available

queue slots.

Fix this by replacing 'return retval' with 'goto err_allocate_pqn'

so that clear_bit() is always called on the error path without

touching the uninitialized pqn pointer.

AILIKFD-813

(cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References